Today's Message Index:
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1. 06:49 PM - Oil Cooling (barrynorman@comcast.net)
2. 07:39 PM - Re: Oil Cooling (pilot623)
Message 1
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I have flown my Pulsar III with dual coolers and a thermostat on it for years and
recently had problems with the thermostat not working right and oil temps only
getting up to 145 F in the winter months. In addition to that I noticed the
oil pressure would drop after takeoff momentarily when the thermostat would
open. This weekend, I took the thermostat off and bypassed one of the coolers
and the oil stayed around 220 F in cruise. That's fine for these winter months
but not good for warmer temps.
My question is this, I have the cooler behind the opening on the pilot side and
think that the dynamic pressure is much higher on the other side. Has anyone
run a single cooler on the series II or III with success? Have they noticed that
the dynamic pressure is higher on the passenger side? I seem to remember Ricky
T. saying something along those lines years ago.
Barry
Message 2
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Barry,
My Series 2(.75) has flown with one oil cooler on the pilot side and no
thermostat since day one. I suspect there are higher dynamic pressures on
the copilot side but have never attempted to measure the difference. My lone
CHT measurement comes from a Rotax-type probe screwed into the head on the
copilot aft cylinder.
Jim
N623JF
_____
From: owner-pulsar-list-server@matronics.com
[mailto:owner-pulsar-list-server@matronics.com] On Behalf Of
barrynorman@comcast.net
Sent: Tuesday, February 05, 2013 8:49 PM
Subject: Pulsar-List: Oil Cooling
I have flown my Pulsar III with dual coolers and a thermostat on it for
years and recently had problems with the thermostat not working right and
oil temps only getting up to 145 F in the winter months. In addition to that
I noticed the oil pressure would drop after takeoff momentarily when the
thermostat would open. This weekend, I took the thermostat off and bypassed
one of the coolers and the oil stayed around 220 F in cruise. That's fine
for these winter months but not good for warmer temps.
My question is this, I have the cooler behind the opening on the pilot side
and think that the dynamic pressure is much higher on the other side. Has
anyone run a single cooler on the series II or III with success? Have they
noticed that the dynamic pressure is higher on the passenger side? I seem to
remember Ricky T. saying something along those lines years ago.
Barry
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